Stone-sawing machine.



D. W. PARKER.

STONE SAWING MACHINE. APPLIOATION FILED 0012.14, 1912.

Patented May 5, 1914.

3 SHEETSSHEET 1.

WITNESSES.

D. W. PARKER.

STONE SAWING MACHINE.

APPLICATION FILED 00114, 191g.

Patented May 5, 1914.

3 SHEETS-SHEET 2.-

WITNESSES 1 D. W. PARKER. STONE SAWING MACHINE.

APPLICATION FILED 00114, 1912.

1 ,O95,41 5 Patented May 5, 1914.

43/ 42 3 BHEBTSSHEET 3.

\ 29 I /0 I 27 g9 27 i r i WITNESSES:

. ATTORNEY vation of the same.

UNITED STATES PATENT orricn- DANIEL W. PARKER, 0F EVERETT, WASHINGTON.

- STONE-SAWING MACHINE.

. Specification of Letters Patent. i Patented May 5 1914, Application filed October 14, 1912.

Serial No. 725,610.

To all whom it may concern:

Be it known that I, DANIEL W. PARKER, a citizen of the United States, residing at Everett, in the county of Snohomish and State of Washington, have invented certain new and useful Improvements in Stone- Sawing Machines, of which the following is a specification.

This invention relates to stone sawing machines; .and the object of the invention is the perfecting of such devices whereby the operations thereof may be facilitated and more economically performed'than hitherto.

The invention consists in the novel construction, adaptation and combination of devices, as will be hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a plan view of a stone sawing machine embodying my invention. Fog. 2 is a side ele- Fig. 3 is a sectional view through 3-3 of Fig. 2. Fig. 4 is a detail transverse sectional view of the devices employed for securing a saw to the arbor. Fig. 5 is a fragmentary sectional view of a saw shown applied. I

The reference numeral 10 designates the base or floor upon'whichds supported a rigid framework comprised of posts 11 and beams 12.

13 represents a transverse shaft which is journaled in bearing boxes 14 secured to said framework at a distance above the floor and is driven from a powerlshaft, as by a belt passing about the pulleyilo. Hingedly connected to the boxes 14 are oscillatory frame members each of a substantially triangular shape in elevation and comprised of diverging arms "16 and 16 which are respectively connected at their outer ends by arcuate elements 16 which are concentric to the axis of oscillation of the frame members. Adjacent to the lower ends of the arcuate elements 16 are provided journal bearings for a horizontally arranged arbor 17 which car- I ries a circular saw 18.

Formed or provided upon the convex side of the frame elements 16 are rack teeth 19 which are engaged by toothed pinions 20 mounted upon a horizontal shaft 20 and likewise carrying a gear wheel 20 which is rotated by means of a worm 21 provided on an upright shaft 21 The latter is provided with a gear wheel 21 which is in mesh I with a worm 22 provided upon a horizontal of a disk friction-element 22.

23 represents a horizontal shaft disposed in rectangular relations to the shaft 22 and having splined thereto a .wheel 23 whose periphery is in frictional engagement with the face of the disk 22 23* is a shifter lever whereby axial movement is afforded to the wheel 23 to move the latter diametrically with respect to the disk in order totransmit rotary motions at various speeds from the shaft 23 to the shaft 22 and cause the last named shaft to be.

driven in either rotary direction as may be required for swinging the oscillatory frame up or down, as will be understood. The shaft 23 is driven in any suitable manner, as from the shaft 13 by means of belts 24 and 25 (see Fig. 1) passing about pulleys 1-3 and 23 upon the respective shafts and pulleys 24 and 25 upon an intermediately disposed counter-shaft 26.

Positioned upon the floor 10 are chairs 27 in which are journaled the axles of rollers 27 which operate in ways'28 provided in the underside of a table 28 and serves to support and guide the latter. Secured to the underside of said table are racks 28 which are. in mesh with toothed pinions" 29,

Figs. 1 and 3, mounted upon transverse shafts 29 which are jou'rnaled inbearing.

boxes 29 Upon an end of each of the shafts 29? is a gear 29 which is driven by a worm 30 provided on a longitudinal shaft 30 This shaft has mounted thereon a gear 30 in mesh with a worm 31 r'ovided at the lower end of an upright sha t 31 and having at its upper end a gear 3]. which is.in turn driven'by a worm 33 provided on a horizontal shaft 33 This shaft is provided with a disk 33 in frictional engagement with a driving wheel 26 which is splined to the aforesaid counter-shaft 26 and is movable by a shifter 34 to regulate the speed an direction of rotation of the disk 33 to accordingly cause the table to travel in either direction and -at selected speeds.

Abrading shot and water is employed, as customary, with the present invention and, after being utilized, is collected in inclined gutters 34 and 34 and a pit 34 provided below the track ofthe table. A power driven screw conveyer, such as 35, Figs. 2 and 3, may advantageously be employed at the bot shaft 22 having mounted at one end therei tom of the gutter '84 in advance of the table to transport the shot into said pit. Extending into the pit and to a suitable height above the saw is an elevator 36 which delivers the shot from the pit into a hopper, indicated by 36 in Fig. 2, whence the shot is supplied with water by a tube 36 in front of the saw 18 to be drawn thereby into the 'In Fig. 4 T illustrate devices for clamping the. saw 18 to its arbor 17 and also provision for protecting the journal bearings from the presence of gritty matter. The clamping devices comprise two cast metal members 38 and 39 provided with flanges 38 and d9 which are uxtaposed with the saw, as shown, and through which the clamping bolts 40 extend. To accommodate the withdrawal of the bolts for the removal-of the saw, slots, as 40 are provided about the circumference of one of the flanges and in which the bolt may be tilted after being withdrawn from the other flange. The arbor extends into the member 38 to within proximity of the saw. The arbor is j ournaled in brasses 41 provided in one of the frame elements 16 At the other side of the saw, a journal is aflorded by a stub 39 provided on a clamp mem* ber 39 acting in cooperation with brasses 41 which are housed in another of the elements 16 Annular ridges 17 for the arbor, and 39 for the stub 39 ,interfitting with grooves provided in the respective brasses, serve to obviate any endwise movement to the arbor. To prevent the admission of grit to these journals I provide a cover plate 42 detachably secured to the outer frame element 16 and spanning the extremity of the stub 39 and the brasses 41 Acollar 42 surrounds the arbor, as shown, and is employed to retain packing 43 in place about the "arbor. Packing 43 and 43 is also utilized with retaining-collars 44 and 44 to protect the interstices between the clamping members and the com panion frame elements 16 The above mentioned collars are each made of semi-circular segments in order to allow their being placed in position. The saw arbor is driven by a belt 45 passing about pulleys 17 and 13 on the arbor and shaft 13, respectively.

46 and 46 represent sector shaped guard members for the saw to prevent shot, water and the material which may adhere to the saw as it leaves the saw-kerf being thrown upwardly and rearwardly. The guard member 46 is desirably secured to the oscillating frame which carries the saw; while the other member 46 is arranged for revoluble movements about the axis of the saw arbor.

47 is a runner attached to the guard member 46 and is utilized for supporting the member by hearing against the top surface of a stone. Supplementary to said runner is a ratchet rod 48 connected by a pivotal pin 48 to member 46 (see Fig. 2) and engageable upon a stud 49 provided on. the oscillating frame. Upon each side of the saw is a brush, as 50, which is secured to member 46 and disposed to sweep the saw.

In operation, the stone, or stones to be sawed are placed upon the table which is then caused to be fed forward through the agency of the described racks 28 and the power driven pinions 29.- As'the table advances, thesaw 18 is brought down into cutting position with respect to the work through the instrumentality of the pinions 20 engaging the racks 19 of the oscillatory frame. The downward swinging movements of this frame may be used-as a feed for the saw, by being continuous, through a proper adjustment of the driving frictional element 23 with respect to the driven disk element 22 or the height of the saw may be regu lated, and be thus maintained by shifting the element 23 medially of the disk 22 What I claim, is

1. In a stone sawing machine, the combination with a circular saw and a vertically adjustable oscillatory frame therefor, of a stationary saw guard and a movable saw guard about the axis of the saw, and means engageable with a device provided on said frame for suspending the movable guard in predetermined positions.

2. In a stone sawing machine, the combination with a circular saw and a vertically adjustable oscillatory frame therefor, of a saw guard movable about the axis of the saw, means carried by the guard and arranged to bear upon the top surface of the work for regulating the position of the guard with respect to said surface, and means engageable with a device provided on said frame for suspending the guard in predetermined positions.

3. In a stone sawing machine, the combination with a circular saw and a vertically adjustable oscillatory frame therefor, of a saw guardmovable about the axis of the saw, and means carried by the guard and arranged to bear upon the top surface of the work for regulating the position of the.

guard with respect to said surface.

4. In a stone sawing machine, the combination with a circular saw and a vertically adjustable oscillatory frame therefor, of a saw guard movable about the axis of the saw, means carried by the guard and arranged to bear upon the top surface of the work for regulating the position of the guard with respect to said surface, means engageable Witha device provided on said frame for suspending the guard in predetermined positions, and brushes for sweeping the saw.

5. In a stone sawing machine, the combination with a circular saw and a vertically adjustable oscillatory frame therefor, of a saw guard movable about the axis of the saw, a rack bar carried by said guard, and

means carried by said frame to beengaged by said rack for suspending the guard in predetermined positions.

6 In a stone sawing machine, the combination with a circular saw and a, vertically adjustable oscillatory frame therefor, of a saw guard movable about the axis of the saw, means carried by the guard and arranged to bear upon the top surface of the work for regulating the position of the guard With respect to said surface, and means also carried by said guard for sweeping the saw.

Signed at Everett, WashQ, this lith day of September, 1912.

DANIEL WV. PARKER.

Witnesses:

ALBERT N. SMITH, L. E. THOMPSON. 

